Dear Dr. Green,

  During my bead research, I found the library and staff at The Bead Museum in AZ to be very helpful 


http://www.thebeadmuseum.com/


  Also, Karlis Karklins, editor of the Bead Journal, has a wealth of knowledge on such topics and is always willing to reply to bead related questions.


http://www.thebeadsite.com/bksp-bea.html


Good luck with your research!